scientress

;End GCode
M104 S0                      ; extruder heater off
M140 S0                      ; heated bed heater off (if you have it)

G91                          ; relative positioning
G1 E-1 F300                  ; retract the filament a bit before lifting the nozzle, to release some of the pressure
G1 Z+0.5 E-5 X-20 Y-20 F9000 ; move Z up a bit and retract filament even more
G28 X0 Y0                    ; move X/Y to min endstops, so the head is out of the way

M84                          ; steppers off

scientress

#include <stdio.h>

void main(void){
  for(int i=-13;i<=13;i++){
    int iresult=i/12;
    float fresult=((float)i)/12.0f;
    printf("%d\t%d\t%d\t%f\n",i,iresult,((int)fresult),fresult);
  }
}

scientress

This is a D3 based pie/donut chart with values and labels with polylines. It's based on dbuezas example Pie Chart Labels with missing data